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PHARMACOGRAPHIA, the word which gives the title to this book, indicates the nature of the work to which it has been prefixed. The term means simply a writing about drugs; and it has been selected not without due consideration, as in itself distinctive, easily quoted, and intelligible in many languages.

Pharmacographia, in its widest sense, embodies and expresses the joint intention of the authors. It was their desire, not only to write upon the general subject, and to utilize the thoughts of others; but that the book which they decided to produce together should contain observations that no one else had written down. It is in fact a record of personal researches on the principal drugs derived from the vegetable kingdom, together with such results of an important character as have been obtained by the numerous workers on Materia Medica in Europe, India, and America.

Unlike most of their predecessors in Great Britain during this century, the authors have not included in their programme either Pharmacy or Therapeutics; nor have they attempted to give their work that diversity of scope which would render it independent of collateral publications on Botany and Chemistry.

While thus restricting the field of their inquiry, the authors have endeavoured to discuss with fuller detail many points of interest which are embraced in the special studies of the pharmacist; and at the same time have occasionally indicated the direction in which further investigations are desirable. A few remarks on the heads under which each particular article is treated, will explain more precisely their design.

The drugs included in the present work are chiefly those which are commonly kept in store by pharmacists, or are known in the drug and spice market of London. The work likewise contains a small number

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